Patent US3152164A successfully refreshed from Google Patents.
US3152164A
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Novel cyclic phosphite esters and process involving transesterification of a phosphite diester with a glycol
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1959-04-29
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Granted: 1964-10-06
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Expires: 1979-04-29
Abstract
No abstract record available.
Inventors
- 👤 Alexis A Oswald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:13
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/6564; C07F9/6571; C07F9/6574
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
84 words
AN IMPROVED PROCESS FOR THE PREPARATION OF A CYCLIC HYDROGEN PHOSPHITE WHICH COMPRISES REACTING A MATERIAL SELECTED FROM THE GROUP CONSISTING OF A DIALKYL HYDROGEN PHOSPHITE, A DIARYL HYDROGEN PHOSPHITE AND AN ALKYL ARYL HYDROGEN PHOSPHITE WITH A MATERIAL SELECTED FROM THE GROUP CONSISTING OF 1,2-GLYCOL, 1,3-GLYCOL, VICINAL GLYCOL AND A,W-GLYCOL AT A TEMPERATURE OF FROM 10*C. TO 180* C. AND A PRESSURE OF FROM 1MM. HG TO 5 ATMOPSHERES, IN THE ABSENCE OF A CATALYST, AND REMOVING THE ALCOHOL FORMED DURING THE REACTION.
Claim 2
Dependent Claim
84 words
AN IMPROVED PROCESS FOR THE PREPARATION OF A CYCLIC HYDROGEN PHOSPHITE WHICH COMPRISES REACTING A MATERIAL SELECTED FROM THE GROUP CONSISTING OF A DIALKYL HYDROGEN PHOSPHITE, A DIARYL HYDROGEN PHOSPHITE AND AN ALKYL ARYL HYDROGEN PHOSPHITE WITH A MATERIAL SELECTED FROM THE GROUP CONSISTING OF 1,2-GLYCOL, 1,3-GLYCOL, VICINAL GLYCOL AND A,W-GLYCOL AT A TEMPERATURE OF FROM 10*C. TO 180* C. AND A PRESSURE OF FROM 1MM. HG TO 5 ATMOPSHERES, IN THE ABSENCE OF A CATALYST, AND REMOVING THE ALCOHOL FORMED DURING THE REACTION.
Claim 3
Dependent Claim
6 words
A CYCLIC DIPHOSPHITE OF THE FORMULA
Claim 4
Dependent Claim
6 words
A CYCLIC DIPHOSPHITE OF THE FORMULA
Claim 5
Dependent Claim
53 words
AN IMPROVED PROCESS FOR THE PREPARATION OF A CYCLIC 2-CHLOROETHYL PHOSPHITE WHICH COMPRISES REACTING TRIS-2CHLOROETHYL PHOSPHITE WITH A GLYCOL AT A TEMPERATURE OF FROM 0*C. TO 180*C. AND A PRESSURE OF FROM 3 MM. HG TO 1 ATMOSPHERE IN THE ABSENCE OF A CATALYST, AND REMOVING THE ETHYLENE CHLOROHYDRIN FORMED DURING THE REACTION.
Claim 6
Dependent Claim
53 words
AN IMPROVED PROCESS FOR THE PREPARATION OF A CYCLIC 2-CHLOROETHYL PHOSPHITE WHICH COMPRISES REACTING TRIS-2CHLOROETHYL PHOSPHITE WITH A GLYCOL AT A TEMPERATURE OF FROM 0*C. TO 180*C. AND A PRESSURE OF FROM 3 MM. HG TO 1 ATMOSPHERE IN THE ABSENCE OF A CATALYST, AND REMOVING THE ETHYLENE CHLOROHYDRIN FORMED DURING THE REACTION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-10-06 | 1968-04-06 | 1968-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-06 | 1972-04-06 | 1972-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-06 | 1976-04-06 | 1976-10-06 | $7700.00 | Window Closed / Lapsed |